OTP Solution - Flash Call Flash Call OTP is another the way to send OTP (One Time Pin) into user’s mobile device.User will receive a missed call in the form a random number and the OTP code is the last 4-6 digit of the end missed call number.Example: +62895399561088The OTP is 1088 OTP Solution - WhatsApp Send OTP (One Time Pin) via WhatsApp into user’s mobile deviceMessage content will not be alteredExample: Your PrivyID authentication code is: 94362. Do not share this code for security reasons.